Controlled study

A study in which researchers compare the effects of a treatment in a group of subjects against another group or groups taking either another treatment or no treatment. Controlled studies are much more effective than
uncontrolled studies
, and the best type of controlled study is a
double-blind placebo-controlled study
.

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.